Door-operating mechanism.



G. P. TURNER, W. T. DRAKE & J. E. LITTLE. 1100B OPERATING MECHANISM.

APPLIOATION FILED D110. 8, 1911.

Patented May 7, 1912.

WITNESSES Maw INVENTORS kr fl A Erna?- Wz'ilaam TzPd da e/716A E L LTZZQ; I I, I .2 Harvey UNITED STATES PATENT oEEIcE.

CHARLES P. TURNER AND WILLIAM T. DRAKE, 0F HARRISBURG, AND JAMES E.

LITTLE, 0F STEELTON, PENNSYLVANIA.

DOOR-OPERATING- MECHANISM.

1,()25,S9(), Specification of Letters Patent.

Original application filed October 26, 1910, Serial No. 589,282. Divided 1911. Serial No. 664,641.

operated during tilting. It is therefore neccssary that the door-operating mechanism producing reciprocator movement of the door be such that this movement be transmitted to the door in practically the same proportion to the motion of the moving mechanism, for any position of the furnace. To this end there is provided a stationary air or hydraulic cylinder 42, fastened to or otherwise supported by a stationary beam or girder 43, independent of the furnace. The lower end of the cylinder is connected to an Patented May 7, 1912. and. this application filed December 8,

To uZZ whom it may concern Be it known that we, CHARLES P. TURNER and 1V ILLIAM' T. DRAKE, residing at Harrisin the county of Dauphin and State 0' Pennsylvania, and JAMES E. LITTLE, residing at Steelton, in the county and State aforesaid, have invented certain new and useful Improvements in Door-Operating Mechanism; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, refactuating fluid supply pipe 44, provided erenee being had to the accompanying with a three-way hand cook 45 within reach drawings, and to letters or fi uies of referof the operator. The cylinder has a piston ence maiked theleon, which form a pait of operating a piston rod 46 which has mountthis specification. ed on its end a cross-head 46 carrying a 11115 lnvention relates to door operating mechanism for tilting or rocking furnaces permits the furnace to be rocked or tilted without actuating the door operating mechanism, or permits the door mechanism to be operated to open the door at any position of the furnace, and is a division of our application for patent, filed October 26, 1910, Serial No. 589,282.

Referring to the drawings, in which like parts are similarly designated-Figure 1 is a vertical, central, transverse section of a tilting furnace and the doorsoperating mechanism. Fig. 2 is a detail side View of the door-operating mechanism.

The tilting furnace F is provided with one or more openings 36, for the introduction of the stock, the examination of the interior of the furnace, etc. Each opening 36 is closed by a door 37 which opens by sliding upward in suitable ways 38 at the sides thereof. The door 37 is provided with a peep-hole and an eye 40, or other equivalent means, to which is fastened a wire rope or chain 50.

The furnace normally stands in the position shown in full lines in Fig. 1. During certain stages of its operation it is desired to roll, rock or tilt it either forward or backward, the two extreme positions being indicated in dotted lines in Fig. 1, and the extreme forward position being the one in which the molten contents of the furnace are discharged throu h the spout 41.

It may be desirab le to operate the door 37 in any position of the furnace, or it more often is the case that the door is notto be rope pulley 47. Below the mount-ed on the girder or beam 43 are two idle pulleys 48 and 49. wire rope 50 is connected at one end to the door 37, 21. 6a, fastened in the eye 40, passes over a guide pulley 51 on the f around the idle pulley 48, thence over pulley piston and tened at the other end to an eye 52, bolt, or other equivalent device at the front of the furnace. The cross-head 46 is connected to one end of a rope 52 that passes over a pulley 53 mounted on the beam or girder 43, so that it will be over the cylinder 42, and the other end of the rope 52 suspends a counterweight 54. Air is admitted by cock through pipe 44 to the cylinder beneath the piston, raises the .piston, its rod, crosshead and pulley 47, thereby lengthening the distance between 47 and 48, 49. One end of rope being held fast at 52, the other end connected to the door will be drawn up, and with it the door 37. When the door is to be closed, the cock 45 is turned to vent the cylinder and pipe 44 between the cock and cylinder, to the atmosphere, the weight of the operating parts causing the piston descend and the door to close. thus be seen from an inspection of Fig. 1,

respect to the pulley 51 is such that the sum of the lengths of the portions rope 50 between 48 and 52, and 49 51 is consequently door may be position of the furnace, or the be tilted Without lifting the furnace may door. Any other device may be used in place of the cylinder 42 and its piston, to cause a bodily movement or lifting of the pulley 47.

1. The combination with a tilting furnace and a vertically sliding door therefor; of mechanism separate from such furnace but flexiblyconnected to said door to operate it in any position of the furnace.

2. The combination with a tilting furnace and a sliding-door therefor; of mechanism independent of the furnace permitting the movement of the furnace to any position Without actuating the door, and arranged to operate the door in any position of the furnace.

3. The combination with a tilting furnace and a sliding door therefor; of stationary mechanism separate from the furnace and flexibly connected to the door, permitting the movement of the furnace to any position without actuating the door and arranged to operate the door in any position of the furnace.

4:. The combination with a tilting furnace and a sliding door therefor; of a rope connected at one end to the door and at the other end to the furnace, and stationary mechanism between the ends of the rope operating to exert a pull thereon to open the door.

5. The combination with a tilting furnace and a sliding door therefor; of a rope con- Copies of this patent may be obtained for five cents each, by addressing the nected at one end to the door and at the other end to an opposite corner of the furnace, a stationary cylinder, a piston therein, a pulley carried by the piston, two guide pulleys below ,the cylinder, said rope passing over said pulleys, and means to supply actuating fluid behind the piston.

6. The combination with a tilting furnace; of door operating mechanism including fluid actuated devices separate from the furnace but flexibly connected to the door and located above the same between its front and rear walls, and a flexible connection between the door and the operating mechanism arranged to permit the furnace to be tilted to any position without operating the door and to operate the door in any position of the furnace.

7. The combination with a tilting furnace; of door operating mechanism above and separate from the furnace, and a fiexi ble connection between the door of the furnace and the furnace, said flexible connection having sliding connection with the operating mechanism.

In testimony that we claim the foregoing as our invention, we have signed our names in presence of two subscribing witnesses.

CHARLES P. TURNER. VILLIAM T. DRAKE. JAMES E. LITTLE.

\Vitnesses CHAS. R. HoL'roN, ELMER H. CLARK.

Commissioner of Patents.

Washington, I). G. 

